Found 2 items, similar to Autumnal equinox.
English → English (WordNet) Definition: autumnal equinox autumnal equinox n 1: September 22 [syn: September equinox, fall equinox] [ant: vernal equinox] 2: (astronomy) the equinoctial point that lies in the constellation of Virgo
English → English (gcide) Definition: Autumnal equinox Autumnal \Au*tum"nal\, a. [L. auctumnalis, autumnalis: cf. F. automnal.] 1. Of, belonging to, or peculiar to, autumn; as, an autumnal tint; produced or gathered in autumn; as, autumnal fruits; flowering in autumn; as, an autumnal plant. [1913 Webster] Thick as autumnal leaves that strow the brooks In Vallombrosa. --Milton. [1913 Webster] 2. Past the middle of life; in the third stage. [1913 Webster] An autumnal matron. --Hawthorne. [1913 Webster] Autumnal equinox, the time when the sun crosses the equator, as it proceeds southward, or when it passes the autumnal point. Autumnal point, the point of the equator intersected by the ecliptic, as the sun proceeds southward; the first point of Libra. Autumnal signs, the signs Libra, Scorpio, and Sagittarius, through which the sun passes between the autumnal equinox and winter solstice. [1913 Webster]